The ED-3 is a wall voltage regulator designed specifically for the speed control of asynchronous single-phase motors operating in ventilation systems. It runs at 230V AC/50Hz and regulates motor speed within approximately 50–100% of the rated speed range.

The unit is housed in an ABS plastic enclosure and is fitted with a fuse tube (5.2×20mm, 250V/12A) for short-circuit and overload protection. Important: the switch isolates the power line but does not isolate the drive circuit.

Key Features

• Wall-mounted voltage regulator (dimmer) for asynchronous single-phase motors
• Operating voltage: 230V AC/50Hz
• Motor speed control range: approximately 50–100% of rated speed
• Maximum load: up to 2,500W
• Short-circuit/overload protection via fuse tube 5.2×20mm, 250V/12A
• Construction material: ABS plastic

Product Benefits

• Speed control from 50% to 100% of rated speed lets users balance ventilation airflow to room conditions
• 2,500W maximum load capacity handles a wide range of single-phase ventilation motor ratings
• Integrated fuse tube protection guards against short circuits and overloads without requiring a separate fuse holder
• ABS plastic housing is lightweight and suitable for standard wall-box or surface mounting
• Wall-mounted format keeps speed adjustment accessible without requiring access to the motor or panel

Technical Specifications

• Model: ED-3
• Operating Voltage: 230V AC/50Hz
• Maximum Power: 2,500W
• Speed Control Range: ~50–100% of rated motor speed
• Compatible Motor Type: Asynchronous single-phase (ventilation systems)
• Overload Protection: Fuse tube 5.2×20mm, 250V/12A
• Operating Temperature: 10°C to +60°C
• Maximum Humidity: 95%
• Construction Material: ABS plastic
• Dimensions: 120×85×35mm

Why You'll Love It

• 120×85×35mm wall-mount form fits standard electrical wall boxes
• 95% maximum humidity tolerance suits installation in kitchen or bathroom ventilation circuits
• Integrated fuse protection removes the need for a separate circuit breaker for motor protection
• Package includes 1× ED-3 Ventilator Speed Regulator 230V